I'm sorry, I've watched that video over and over and I don't see where Terry was doing anything other than trying to get his bearings. He was on his back, people flying all over him, Finley was in the path of Terry trying to get himself together.
But, after watching it a whole bunch and especially in slow motion, I can see where they might see that as a legitimate punch.
I'm not sure this will ever be truly resolved. However, something else I thought of: if Bayless thinks that the Mavs have needed the refs to win this series, then he TRULY has not been paying attention to this series, which, regardless of who wins, oughta go down as one of THE fiercest, most competitive, most EXCITING playoff series EVER!
But again, that's Bayless for ya.....